<p align="justify"><em>The rapid development of technology today makes people adapt. In the field of education, especially in the field of engineering drawing design, several computer programs have been very helpful in completing work with good results. Human resources are needed who are willing to learn and able to adapt to technological advances so that they can run computer programs optimally. For high school students who are interested in continuing their education in engineering at the university, skills in using computer programs will be very helpful. Therefore, the Civil Engineering Department, Faculty of Engineering, University of Semarang carries out community service, especially for students of SMA Kesatrian 2 Semarang, namely "Training for Introduction of 2D AutoCAD for Students at SMA Kesatrian 2, Semarang Kesatrian Education Foundation". This training is carried out to provide an introduction to skills in technical drawing with computer programs for high school students so that they can complement the knowledge learned at school. The method used is to do tutorials and practice directly in the Planning <strong>L</strong>aboratory of the Civil Engineering Department, Faculty of Engineering, University of Semarang. The number of participants in this activity was 25 students. The activity was carried out on August 19, 2019, at the Planning Laboratory of the USM Faculty of Engineering. The students are mostly able to follow the theory and exercises given in this training module.</em></p>

<p align="justify"><em>Building maintenance is an activity to maintain the reliability of the building and its infrastructure and facilities so that the building is always fit for function. A consistent building maintenance period has become a requirement that must be met, especially for buildings that are used commercially. As one part of the construction process, post-construction building maintenance has an important role to ensure the life of building construction. Lack of understanding of work methods, procedures, standardization of maintenance, and equipment used for maintenance activities of building elements also affects the age of building construction. This activity aims to carry out building maintenance in the form of repainting the meeting hall building to provide comfort and safety for the community, both for housing or residence, religious activities, business activities, social and cultural activities, and other special activities. The method used is in the form of socialization and direct practice of painting meeting halls. The result of this community service activity is that it has finished repainting the meeting hall of the Muktiharjo Kidul Village, Pedurungan District, Semarang City so that it looks more beautiful and comfortable.</em></p><p align="justify"><span><br /></span></p>

<p><em>Gogodalem Village is one of the regions of Bringin District, Semarang Regency, which has natural conditions in the form of cliffs and ravines because it is located on a plateau. Some of the cliffs are still rock and soil so they are prone to landslides when rainfall is high. This became the basis for carrying out the University of Semarang Community Service Program (KKN) in the form of building stone sheet piles on the cliffs of Plataran-Kauman Roads in East Gogodalem Hamlet. The choice of location was based on the high level of landslide risk and the road is the main access to Plataran and Kauman Hamlets. The activity implementation method starts from the coordination and socialization stage, then the volume calculation and budget plan, and the last stage is the implementation of construction work. A fee of Rp. 5,728,500.00 is needed to complete the construction work. This activity has been carried out properly and smoothly, so it is hoped that it can reduce the occurrence of land shifts due to high rainfall which can cause landslides on cliffs that close roads and disturb residents who will pass through these roads.</em></p>

<p align="justify"><span>The world of education is one of the sectors that has been affected and has undergone drastic changes in teaching and learning activities from face-to-face to online. The activities that students must participate in, namely the student study service (KKN), must also be carried out independently around their environment. In the current pandemic situation, teenagers in the village have much free time that can be filled with beneficial activities and increase knowledge and abilities, so it is necessary to carry out additional skills training. This KKN is a community service activity carried out by one of the students of the Civil Engineering Department, Faculty of Engineering, Universitas Semarang is conducting basic SketchUp software training for teenagers in RT.04 RW.01 Pepe Village, Tegowanu District, Grobogan Regency. KKN students conduct training by making videos to explain the material and doing hands-on practice from house to house with several teenagers in the village. The teenagers seemed enthusiastic and interested in the software used and in the world of civil engineering and architecture. The activity went smoothly and provided benefits in increasing knowledge and abilities after training.</span></p>

<em>The impact of Covid-19 was felt from various sectors including MSMEs. One of them is Kripik Singkong Lancar Mandiri MSMEs in Dongos Village. The problem faced by partners is the monotony of production and management systems for selling goods. The purpose of this community service is to increase understanding and application of science and technology in society (mechanization, IT, and management) and to increase competitiveness (increasing the quality, quantity, and value of resources). The method of implementing community service includes (1) the preparation stage, the activities carried out are problem identification and data collection; (2) the implementation stage, the activities carried out are the process of training and mentoring; (3) the evaluation stage; and (4) preparation of reports stage. The results of this community service show that there is an increase in understanding and application of science and technology in society (mechanization, IT, and management) and there is an increase in competitiveness (increasing the quality, quantity, and value of resources).</em>

<p><em>The potential for agriculture and plantations in Amongrogo Village, Limpung District, Batang Regency is enormous. This is because the majority of the people of Amongrogo Village work as farmers and agricultural land in the village is categorized as productive land. Based on the existing conditions, the community needs education about the importance of growing medicinal plants for daily life. The function of medicinal plants can meet the needs of traditional medicine for the community. The activity of planting medicinal plants is by utilizing vacant land as a place for planting. The benefit of this activity is to increase public knowledge about the importance of medicinal plants. Planting of medicinal plants is done using polybag media. The selection of this medium is based on planting through polybags does not require a large area of land and is quite affordable. From the community service activities that have been carried out, the community can see how to grow medicinal plants and understand the importance of medicinal plants for everyday life and can apply them in their respective environments.</em></p>

<p><em>Kampung Baru Village is one of the villages in Senapelan District, Pekanbaru City</em><em>. Has a Posyandu Mekar Kuntum Smell Fragrant. Posyandu functions are explained by partners for continuous monitoring of public health. Currently, posyandu still has simple facilities and infrastructure. To encourage people to feel comfortable when they are there, it is necessary to add facilities and infrastructure, namely by installing ceilings and dividing curtains.</em> <em>The purpose of this community service is to assist partners in making planning designs and cost budget plans (RAB) for ceiling renovations and curtain installation. The method used is the counseling method. The output of this activity is a planning drawing and the type of ceiling and curtain used and the RAB for installing the ceiling and curtain. The installed ceiling is a type of gypsum with a volume of 45 m². For blinds that are installed made of soft and not transparent. Assisting with the installation of the posyandu ceiling and curtain.</em></p><br /><em></em>

<p><em>In the field of regional and urban planning, several media can be used to convey information about the problems of an area. The most commonly used medium is using maps. The analysis carried out to present information in the form of maps varies according to needs. To represent and present flood and tidal information in the coastal area of Semarang City, 3D modeling training was conducted using ArcScene 10.4 software, which is part of ArcGIS software. This modeling is carried out by utilizing DEM (Digital Elevation Model) data and data on the addition of water discharge in coastal areas which will then be processed and simulated in the 3-dimensional form that can be watched in video form. It is hoped that this community service in the form of training can provide further knowledge and understanding regarding mapping activities so that it can be applied in student learning and research activities. So second-semester students of the Urban and Regional Planning Department, Faculty of Engineering, Universitas Semarang have a basic understanding of planning and a more sensitive to urban issues and how to do the right analysis according to the goals and needs of urban planning.</em></p>

Banjir bandang adalah aliran massa sedimen (pasir, kerikil, batu dan air ) dalam satu unit dengan kecepatan tinggi. Terjadi karena keseimbangan statik antara gaya geser yang ditimbulkan oleh aliran lebih besar dari gaya geser massa sedimen yang menahan. Karena massa yang mengalir ini mempunyai percepatan maka ketinggian dan kecepatannya akan selalu bertambah, dan pada tingkat batas tertentu keadaan menjadi tidak stabil sehingga massa sedimen terangkat dengan cepat yang menimbulkan banjir bandang. Data curah hujan di Kota Padang mengalami peningkatan dari tahun 2019 hingga tahun 2021 yaitu 2.756,4 menjadi 4.124,2. Hal ini menunjukkan semakin tingginya potensi bencana banjir di wilayah Kota Padang akibat curah hujan yang tinggi. Distribusi spasial inundasi banjir bandang terdapat pada daerah zonasi bahaya tinggi di kawasan sepanjang Batang Kuranji yakni di Kecamatan Koto Tangah, Kecamatan Kuranji, Kecamatan Nanggalo, Kecamatan Padang Utara, dan Kecamatan Pauh. Langkah mitigasi yang dilakukan untuk menanggulangi bencana banjir bandang ini telah dilakukan melalui pembangunan checkdam batu busuk dan melalui normalisasi sungai.

Bencana alam adalah bencana yang disebabkan oleh peristiwa alam. Salah satu bencana yang sering kali terjadi di Indonesia khususnya wilayah Kota Padang adalah banjir. Bencana banjir adalah peristiwa atau rangkaian meluapnya air sungai yang disebabkan oleh faktor alamiah akibat rusaknya buffer zone pada kawasan upper DAS (daerah aliran sungai). Data curah hujan di Kota Padang mengalami peningkatan dari tahun 2019 hingga tahun 2021 yaitu 2.756,4 menjadi 4.124,2. Hal ini menunjukkan semakin tingginya potensi bencana banjir di wilayah Kota Padang akibat curah hujan yang tinggi. Kajian ini menggunakan metode studi literatur dari penelitian yang relevan mengenai bencana banjir. Berdasarkan potensi bahaya banjir kelas tinggi, Kecamatan Koto Tangah merupakan kecamatan yang terluas tingkat bahaya banjirnya yakni 4 546 ha, selanjutnya berdasarkan tingkat bahaya banjir sedang Kacamatan Kuranji merupakan kecamatan yang terluas masuk dalam kategori tingkat bahaya banjir sedang, sedangkan Kecamatan Padang Utara dan Kecamatan Padang Barat. Sedangkan wilayah dengan tingkat bahaya banjir rendah atau bebas banjir di Kota Padang paling luas juga terdapat pada Kecamatan Koto Tangah. Mitigasi bencana yang dilakukan pemerintah Kota Padang adalah identifikasi dan pemetaan zona rawan banjir, sosialisasi mitigasi dan edukasi bencana banjir, mengajak peran serta masyarakat untuk mencegah dan mengatasi banjir, menegakkan aturan tentang pembuangan sampah.